Pehkonen, E. (1989). Russian Requiem: For soprano and contralto soloists, chorus, and orchestra (Vocal Score.). Oxford University Press.
Citazione stile Chigago Style (17a edizione)Pehkonen, Elis. Russian Requiem: For Soprano and Contralto Soloists, Chorus, and Orchestra. Vocal Score. Oxford: Oxford University Press, 1989.
Citatione MLA (8a ed.)Pehkonen, Elis. Russian Requiem: For Soprano and Contralto Soloists, Chorus, and Orchestra. Vocal Score. Oxford University Press, 1989.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.